exjam

/* Threads compatibility routines for libgcc2 and libobjc.  */
/* Compile this one with gcc.  */
/* Copyright (C) 1997-2016 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

exjam

OUTPUT_FORMAT("elf32-powerpc")
OUTPUT_ARCH(powerpc:common)

MEMORY {
   relmem  (rw)  : ORIGIN = 0x00000000, LENGTH = 32M
   codemem (rwx) : ORIGIN = 0x02000000, LENGTH = 224M
   datamem (rw)  : ORIGIN = 0x10000000, LENGTH = 800M
   loadmem (rwx) : ORIGIN = 0xC0000000, LENGTH = 128M
}

exjam

/* Patch for MCP_LoadFile (ioctl 0x53).
 *
 * Reference for most of the types and whatever:
 * https://github.com/exjam/decaf-emu/tree/ios/src/libdecaf/src/ios/mcp
 *
 * This is a proof of concept, and shouldn't be used until it's cleaned up a bit.
 * Co-authored by QuarkTheAwesome, exjam and Maschell
 *
 * Flow of calls:
 * - kernel loads system libraries, app rpx or user calls OSDynLoad

exjam

#include "cafe_loader.h"
#include "cafe_loader_bounce.h"
#include "cafe_loader_iop.h"
#include "cafe_loader_ipcldriver.h"
#include "cafe/cafe_stackobject.h"
#include "cafe/cafe_tinyheap.h"
#include "cafe/kernel/cafe_kernel_process.h"
#include "cafe_loader_rpl.h"

#include <array>

exjam

#pragma once
#include <cstdint>
#include <common/type_traits.h>
#include <libcpu/be2_struct.h>
#include <type_traits>

namespace cafe
{

namespace detail

exjam

signed int net::readHostsFile()
{
  int *v0; // r2
  int v1; // r1
  int v2; // r0
  signed int v3; // r6
  int v4; // r4
  int k; // r3
  _DWORD *i; // r5
  _DWORD *j; // r4

exjam

After https://github.com/decaf-emu/decaf-emu/blob/master/src/libdecaf/src/debugger/debugger_ui_manager.cpp#L16

#include "kernel/kernel_loader.h"

Insert:

#include "kernel/kernel_memory.h

exjam

#include "ppcutils/stackobject.h"

...

IMError
IMStartAPDVideoMode()
{
   ppcutils::StackObject<be_val<uint32_t>> previous;
   auto result = IM_GetNvParameterWithoutHandleAndItb(IMParameter::APDPeriod, previous);

exjam

Program <- _ (Instruction / Comment)* _ EndOfProgram?
Instruction <- _ (CfInst / CfExpInst / TexClause / AluClause)

Number <- < [0-9]+ >
HexNumber <- < '0x' [0-9A-Fa-f]+ >
Float <- $< '-'? [0-9]+ ('.' [0-9]+ )? 'f'? >
EndOfLine <- '\r\n' / '\n' / '\r'
EndOfFile <- !.
End <- EndOfLine / EndOfFile

exjam

Program <- _ (Instructions _)* _ EndOfProgram
Instructions <- CfInst / CfExpInst / TexClause / AluClause

CfInst <- (InstCount _ CfOpcode _ CfInstPropertiesOpt _)
CfExpInst <- (InstCount _ ExpOpcode ':' _ ExpTarget _ ',' _ VecGpr _ CfInstPropertiesOpt _)
TexClause <- (InstCount _ TexClauseInstType _ ':' _ CfInstPropertiesOpt _) TexInst*
AluClause <- (InstCount _ AluClauseInstType _ ':' _ CfInstPropertiesOpt _) AluInst*
EndOfProgram <- 'END_OF_PROGRAM'

Number <- < [0-9]+ >